how about making a shoebox version of your flashback?

A couple years ago I was having flashbacks about the house I grew up in. This was followed by a nightmare everynight about the house breathing and no matter what I did I couldn't get out. Ingoring and distracting myself didn't work. I was reading a book I think but not sure it was one of heather harpham books anyway the woman was having flashbacks and nightmares so she decided to make a shoe box version. and it worked for her. so I tried it. Every time I had that flashback I would grab my shoe box and make what I remembered and put it into it. The flashbacks went away. the nightmare was still there and I couldn't figure out how to put a whole house into a shoe box so I made a 2 foot by 2 foot model of the house putting in what I know kmew about the flashbacks and then I cut down all sides possible, cut out the windows and put string on the inside so that no matter what room I was in all I had to do was climb out a window or pull the string and the wall opened and let me out. that nightmare went away the night I finished "decorating" it..